Screen stand



FIG. 1 is a front perspective view of a screen stand showing our newdesign, the screen shown in dashed lines is environmental only and formsno part of the claimed design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof, the right sideelevational view being a mirror image thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof.

The ornamental design for screen stand, as shown and described.